At present, most of the positive electrode muds are oily muds, and the negative electrodes are mainly water-based muds.
One of the differences is the difference in solvents. The positive electrode slurry uses NMP as a solvent. and the negative electrode slurry uses NMP as a solvent. Ionized water as solvent.
The second difference lies in the different binders. Most positive electrode slurries use PVDF as the binder, while negative electrode slurries mainly use CMC and SBR. as binders
Conductivity of lithium iron phosphate suspension
The main components of lithium battery are: positive electrode powder, negative electrode powder , conductive agent powder, binder powder, organic solvent dispersion, electrolyte, separator, copper current collector, aluminum current collector.
Cathode powder: The most common at present is LiCoO2, in which cobalt is a toxic metal substance; so be careful of inhalation into the respiratory tract in case of contact and do not ingest it if your hands or other parts are contaminated.
Anode powder: Mainly graphite, toxicologically this material is non-toxic. But you still have to pay attention to protection against dust.
Conductive agent: Mainly carbonaceous material, non-toxic, but the particles are finer than graphite, so take special care not to inhale it.
Organic dispersant: mainly used for the preparation of electrode slurries. It is a toxic organic solvent. Do not inhale it or contact it directly.
Electrolyte: This is the most toxic and corrosive component of lithium batteries. Avoid contact or inhalation.
Regardingthe winding process you mentioned, the main elements that can contact are positive electrode powder, negative electrode powder and conductive agent. Generally, as long as they are not inhaled directly and enter the environment. mouth after contact with hands or other parts.
10 megohms. According to the cathode mud preparation table of lithium iron phosphate battery, the average low conductivity is 10S/cm, and the overall value cannot deviate too much from 10S/cm. Lithium iron phosphate is a lithium-ion battery electrode material with the chemical formula LiFePO4. It is mainly used in various lithium-ion batteries.